and recomm. letters

Window structures produced by Goodwin Company comply with the standards of DSTU B V.2.6-15: 2011 and DBN V 2.6 -31: 2006 of Ukraine. All components used in the production of translucent structures have the necessary quality certificates and meet the norms and quality standards of Ukraine, as well as international requirements, which allows us to actively export Goodwin products abroad.